Side element of a shoe upper



FIG. 1 is a side elevational view of a side element of a shoe upper showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a top plan view thereof.

The broken line showing of the lacing elements, the perforations, and the remainder of the shoe is for illustrative purposes and forms no part of the claimed design. 

The ornamental design for a side element of a shoe upper, as shown and described. 